6 Vector Control
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High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
• The Torque Limit Selection (b040) provides four modes as shown below.
• When the Torque limit enabled (TL) function is allocated to one of the multi-function input terminals,
the torque limit function set in the Torque Limit Selection (b040) is enabled only when the terminal TL
is ON.
When this terminal is OFF, the torque limit setting is disabled and the inverter uses the maximum
value as the torque limit value.
When the Torque limit enabled (TL) function is not allocated to one of the multi-function input
terminals, the torque limit function set in the Torque Limit Selection (b040) is always enabled.
• This function regards the torque limit value when the inverter outputs the maximum potential current
as 200%.
To convert to the rated motor torque ratio from this value, use the following formula:
Rated motor torque ratio = Set value x Rated motor current / Rated output current of inverter
b044
Torque Limit 4
(Four-quadrant Mode
Forward
Regeneration)
Heavy
load
(CT)
0. to 200.
(0.4 to 55 kW)
150. %0. to 180.
(75 to 132 kW)
no: Torque limit disabled
Light
load
(VT)
0. to 150.
(0.4 to 132 kW)
120. %
no: Torque limit disabled
C001 to C008
Multi-function Input S1
to S8 Selection
40: Torque limit enabled
41: Torque limit switching 1
42: Torque limit switching 2
––
C021 to C025
Multi-function Output
P1 to P5 Selection
10: Torque limit
––
C026
Multi-function Relay
Output (MA, MB)
Function Selection
––
Mode Description
Four-quadrant
separate setting
mode
Use this mode to set the four-quadrant (Forward Power Running, Reverse Regeneration,
Reverse Power Running, and Forward Regeneration) torque limits in Torque Limit 1 to 4
(b041 to b044).
Terminal switching
mode
Use this mode to switch the Torque Limit 1 to 4 (b041 to b044) setting based on the
combination of the torque limit switching functions 1 and 2 (TRQ1 and TRQ2) allocated to
multi-function input terminals.
The selected torque limit value is enabled for all RUN modes.
Analog input mode
Use this mode to set the torque limit value based on the voltage applied to the terminal
FE of the control terminal block.
0 to 10 V corresponds to the torque limit value of 0% to 200%. The selected torque limit
values are effective for all RUN modes.
Option (option 1,
option 2) mode
Use this mode to set the torque limit value from optional equipment. At present, OMRON
provides no options that support this mode.
Parameter No. Function name Data
Default
data
Unit
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